<template>
    <div class="container">
        <div class="dashboard-text">
            <!-- 树形结构 -->
            <el-tree default-expand-all :data="depts" :props="defaultProps" :expand-on-click-node="false">
                <!-- 节点结构 -->
                <!-- v-slot="{ node, data }" 只能作用在template -->
                <template v-slot="{ data }">
                    <el-row style="width:90%;height:40px" type="flex" justify="space-between" align="middle">
                        <el-col>{{ data.name }}</el-col>
                        <el-col :span="4">
                            <span class="tree-manager">{{ data.managerName }}</span>
                            <!-- $event 实参 表示类型 -->
                            <el-dropdown @command="operateDept($event, data.id)">
                                <!-- 显示区域内容 -->
                                <span class="el-dropdown-link">
                                    操作<i class="el-icon-arrow-down el-icon--right" />
                                </span>
                                <!-- 下拉菜单选项 -->
                                <el-dropdown-menu slot="dropdown">
                                    <el-dropdown-item command="add">添加子部门</el-dropdown-item>
                                    <el-dropdown-item command="edit">编辑部门</el-dropdown-item>
                                    <el-dropdown-item command="del">删除</el-dropdown-item>
                                </el-dropdown-menu>
                            </el-dropdown>
                        </el-col>
                    </el-row>
                </template>
            </el-tree>
            <!-- 弹窗组件：添加&编辑子部门 -->
            <add-dept ref="addDept" :show-dialog.sync="showDialog" :current-node-id="currentNodeId"
                @updateDepartment="getDepartment" />
        </div>
    </div>

</template>
<script>
import { getDepartment, delDepartment } from '@/api/department'
import { transListToTreeData } from '@/utils'
//导入弹窗组件
import AddDept from '@/views/department/components/add-dept.vue'
export default {
    name: 'Department',
    components: { AddDept },
    data() {
        return {
            depts: [],//部门列表数据
            defaultProps: {//树形结构属性
                children: 'children',
                label: 'name'
            },
            showDialog: false,//控制弹窗的显隐
            currentNodeId: null, // 存储当前点击的部门id
        }
    },
    created() {
        this.getDepartment()
    },
    methods: {
        // 获取部门列表数据，并将列表型数据转换成树形结构
        async getDepartment() {
            const result = await getDepartment()
            // console.log('列表数据：',result)
            this.depts = transListToTreeData(result,0)
            // console.log('树形结构：',this.depts)
        },
        // 操作: 添加子部门、编辑部门、删除
        //<el-dropdown-item>中的command属性值，会作为参数传递给operateDept()
        operateDept(type, id) {
            if (type === 'add') {//当点击添加子部门按钮时，显示弹窗
                this.showDialog = true
                this.currentNodeId = id//将当前节点的id值传递给子组件
            }else if(type === 'edit'){
                // 编辑部门场景
                this.showDialog = true
                this.currentNodeId = id // 记录id 要用它获取数据
                // 更新props- 异步动作
                // 直接调用了子组件的方法 同步的方法
                // 要在子组件获取数据
                // 父组件调用子组件的方法来获取数据
                this.$nextTick(() => {
                    this.$refs.addDept.getDepartmentDetail() // this.$refs.addDept等同于子组件的this
                })
            } else {
                // 删除部门
                this.$confirm('您确认要删除该部门吗').then(async () => {
                    await delDepartment(id)
                    // 提示消息
                    this.$message.success('删除部门成功')
                    this.getDepartment()
                })
            }
        }
    }
}
</script>

<style scoped>
.app-container {
    padding: 30px 140px;
    font-size: 14px;
}

.tree-manager {
    width: 90px;
    display: inline-block;
    margin: 10px;
}
</style>
